Search Issue Tracker
By Design
Votes
0
Found in
2022.3.55f1
6000.0.33f1
6000.1.0b1
Issue ID
UUM-91847
Regression
Yes
Low FPS in the Game View when the Editor window loses focus
Reproduction steps:
1. Create a new 3D project
2. Enter the Play Mode
3. Enable the “Stats” Overlay in the Game View
4. Unfocus from the Editor window
5. Observe the Game View FPS
Expected result: FPS remain the same as when the Editor window is focused
Actual result: Game View averages around 5 to 10 FPS
Reproducible with: 2022.3.54f1, 2022.3.55f1, 6000.0.33f1, 6000.1.0b1
Not reproducible with: 2021.3.45f1, 2022.3.53f1
Reproducible on: Ubuntu 24.04, Arch Linux (user)
Not reproducible on: No other environments tested
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Editor crashes on StoredGraphicsBuffer::GetGfxBufferID when VFX Graph property is modified during Play Mode and Application.targetFrameRate is used to limit FPS
- Crash on NVAPI_Thunk when changing Player resolution while HDR display is used and Direct3D12 is set as the graphics API
- Only one out of multiple cameras is shown in the Play Mode while HDR display is used and Direct3D12 is set as the graphics API
- The "Paste Component as New" option is incorrectly displayed as active despite the action being prohibited
- "TLS Allocator ALLOC_TEMP_TLS" errors are thrown when unsuccessfully importing an FBX file
Resolution Note:
After investigating, this is by design. Recently, there was a change to make the Editor throttle when the app is deactivated, even if the game is running. This is to conserve resources for other activities on the computer.
This change also was to make the behavior standard with macOS and Windows which drop frame rates even more than on Linux with this update.
There is no setting to reduce the throttling in the Editor, but if you need the game to run at full speed in the background for whatever reason, you can build a standalone player and run that way unhindered.